Population
Service age groups
About this topic
Service age groups divide the population into broad life-stage bands such as children, young adults, working-age adults, and older people. The groupings are designed to reflect typical demand for age-based services and facilities rather than exact five-year cohorts.
This view is useful for planning childcare, schools, recreation, aged services, and other community infrastructure. It works best alongside five year age groups, household type, and dwelling data, which add more detail about who is living in an area and how needs may change over time.
Interpretation notes
- This is a derived grouping rather than a direct Census question, so the age bands are planning-oriented summaries built from standard age data.
- Percentages relate to the total population; use five year age groups when exact cohort detail matters.
Related topics
Key insight
In 2021, Empty nesters and retirees (60 to 69) was the most common category among residents in Northampton (S), accounting for 19.6% (632 people). This share was higher than Regional WA (12.4%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 125 people and 4.2 percentage points.
Section overview
Age structure - Service age groups
Northampton (S) - Total persons (Usual residence)
This table summarises service age groups for Northampton (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Northampton (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
130
% of total
4.0%
Change from 2016
-0.5pp
130
4.0%
-0.5pp
Primary schoolers (5 to 11)
2021 count
252
% of total
7.8%
Change from 2016
0.0pp
252
7.8%
0.0pp
Secondary schoolers (12 to 17)
2021 count
162
% of total
5.0%
Change from 2016
-0.7pp
162
5.0%
-0.7pp
Tertiary education and independence (18 to 24)
2021 count
136
% of total
4.2%
Change from 2016
-1.0pp
136
4.2%
-1.0pp
Young workforce (25 to 34)
2021 count
251
% of total
7.8%
Change from 2016
+0.4pp
251
7.8%
+0.4pp
Parents and homebuilders (35 to 49)
2021 count
517
% of total
16.0%
Change from 2016
-1.8pp
517
16.0%
-1.8pp
Older workers and pre-retirees (50 to 59)
2021 count
505
% of total
15.6%
Change from 2016
-1.9pp
505
15.6%
-1.9pp
Empty nesters and retirees (60 to 69)
2021 count
632
% of total
19.6%
Change from 2016
+0.5pp
632
19.6%
+0.5pp
Seniors (70 to 84)
2021 count
553
% of total
17.1%
Change from 2016
+4.2pp
553
17.1%
+4.2pp
Elderly aged (85 and over)
2021 count
82
% of total
2.5%
Change from 2016
+0.6pp
82
2.5%
+0.6pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-19
-0.5pp
Primary schoolers (5 to 11)
-7
0.0pp
Secondary schoolers (12 to 17)
-28
-0.7pp
Tertiary education and independence (18 to 24)
-35
-1.0pp
Young workforce (25 to 34)
+7
+0.4pp
Parents and homebuilders (35 to 49)
-73
-1.8pp
Older workers and pre-retirees (50 to 59)
-76
-1.9pp
Empty nesters and retirees (60 to 69)
-1
+0.5pp
Seniors (70 to 84)
+125
+4.2pp
Elderly aged (85 and over)
+18
+0.6pp
Data table
Service age groups for Northampton (S). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 130 | 4.0% | 6.0% | 149 | 4.5% | 6.6% | -19 | -0.5pp |
| Primary schoolers (5 to 11) | 252 | 7.8% | 9.5% | 259 | 7.8% | 9.8% | -7 | 0.0pp |
| Secondary schoolers (12 to 17) | 162 | 5.0% | 7.6% | 190 | 5.7% | 7.4% | -28 | -0.7pp |
| Tertiary education and independence (18 to 24) | 136 | 4.2% | 6.7% | 171 | 5.2% | 7.0% | -35 | -1.0pp |
| Young workforce (25 to 34) | 251 | 7.8% | 12.5% | 244 | 7.4% | 13.6% | +7 | +0.4pp |
| Parents and homebuilders (35 to 49) | 517 | 16.0% | 19.9% | 590 | 17.8% | 20.8% | -73 | -1.8pp |
| Older workers and pre-retirees (50 to 59) | 505 | 15.6% | 13.7% | 581 | 17.5% | 14.1% | -76 | -1.9pp |
| Empty nesters and retirees (60 to 69) | 632 | 19.6% | 12.4% | 633 | 19.1% | 11.3% | -1 | +0.5pp |
| Seniors (70 to 84) | 553 | 17.1% | 10.1% | 428 | 12.9% | 7.8% | +125 | +4.2pp |
| Elderly aged (85 and over) | 82 | 2.5% | 1.7% | 64 | 1.9% | 1.5% | +18 | +0.6pp |
| Total | 3,227 | 100.0% | 100.0% | 3,319 | 100.0% | 100.0% | -92 | 0.0pp |